---
id: CVE-2026-63840
title: 'drm/amdgpu/jpeg: set no_user_fence for JPEG v5.3.0 ring'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  drm/amdgpu/jpeg: set no_user_fence for JPEG v5.3.0 ring

  JPEG rings do not support 64-bit user fence writes, reject CS
  submissions with user fences.

  (cherry picked fro…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 4aeaf3cbfa9f967e71849c66c6914ab6c2054581 <
    46ad73aec27d020f103b4262e4da2d2c22f54799
  - >-
    Linux >= 4aeaf3cbfa9f967e71849c66c6914ab6c2054581 <
    3b0ea2021351b6b813b34fac940957f1f4fad85b
  - Linux 7.0
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-16T15:31:32.881224Z'
published: '2026-07-19'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T15:42:05.972Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-63840'
references:
  - url: 'https://git.kernel.org/stable/c/46ad73aec27d020f103b4262e4da2d2c22f54799'
  - url: 'https://git.kernel.org/stable/c/3b0ea2021351b6b813b34fac940957f1f4fad85b'
tags:
  - cve.org
epss: 0.00165
epssPercentile: 0.05341
ingestedAt: '2026-10-16T17:24:46.756Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

drm/amdgpu/jpeg: set no_user_fence for JPEG v5.3.0 ring

JPEG rings do not support 64-bit user fence writes, reject CS
submissions with user fences.

(cherry picked from commit 86ac011ae234c03fb872f4945913391ea1d8862e)

## Affected

- `Linux >= 4aeaf3cbfa9f967e71849c66c6914ab6c2054581 < 46ad73aec27d020f103b4262e4da2d2c22f54799`
- `Linux >= 4aeaf3cbfa9f967e71849c66c6914ab6c2054581 < 3b0ea2021351b6b813b34fac940957f1f4fad85b`
- `Linux 7.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.